Creating Crockpot Ham and Potato Casserole is simple if you follow these easy steps:

1. Prepare the Crockpot: Grease the inside of the crockpot with cooking spray or butter to prevent sticking.
2. Layer Ingredients: Begin by layering half of the diced potatoes on the bottom of the crockpot.
3. Add Ham: Spread half of the diced ham over the potatoes.
4. Add Onions: Sprinkle half of the chopped onions over the ham layer.
5. Add Cheese: Sprinkle half of the shredded cheese on top of the onions.
6. Repeat Layers: Repeat the layering process with the remaining potatoes, ham, onions, and cheese.
7. Mix Sauce: In a separate bowl, combine the cream of mushroom soup, sour cream, garlic powder, black pepper, salt, and milk. Mix until smooth.
8. Pour Sauce: Pour the sauce evenly over the layered ingredients in the crockpot.
9. Cover and Cook: Cover the crockpot and cook on low for 6-8 hours or on high for 3-4 hours until the potatoes are tender.
10. Check Doneness: Ensure that the potatoes are cooked through and the cheese is melted and bubbly.
11. Serve: Once cooked, stir gently to combine the layers before serving.

These straightforward steps will guide you in creating this incredible casserole effortlessly.